The spelling of the word "kayts" can be explained using the International Phonetic Alphabet (IPA). The word is pronounced /keɪts/, with the first sound being the "k" sound as in "key," followed by the vowel sound "ay" as in "hay." The final sound is the "ts" sound as in "cats." This phonetic transcription helps to clarify the spelling of the word, which may otherwise be confusing due to the non-conventional use of the letter "y" in the middle.